``For those wondering what unleashed today's ferocious post-Trump, post-hawkish Fed speeches rally, the reason may have nothing to do with optimism in the economy or another inflow of retail funds via ETFs, and everything to do with a buildup of bearish short positions ahead of Trump's speech last night... just like after the Brexit vote, and after the Trump election, following Trump's speech, when the market did not fall, shorts were forced to cover their positions, sending prices soaring. ''